Marc Sher

William & Mary

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R. Nevzorov

P.N. Lebedev Physical Institute of the Russian Academy of Sciences

K. T. Mahanthappa

University of Colorado Boulder

P. M. Ferreira

Instituto Politécnico de Lisboa

Tao Han

University of Pittsburgh

Christopher D. Carone

Williams (United States)

Erin De Pree

St. Mary's College of Maryland

Sandip Pakvasa

University of Hawaiʻi at Mānoa

Ricardo A. Flores

San Francisco State University

Jonathan P. Hall

Indiana University Bloomington

İT

İsmail Turan

Middle East Technical University

Cooperative Institutions

European Organization for Nuclear Research

William & Mary

A. Alikhanyan National Laboratory

Fermi National Accelerator Laboratory

Institute of High Energy Physics

Williams (United States)

University of Adelaide

SLAC National Accelerator Laboratory

University of Antwerp

Centre National de la Recherche Scientifique

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KL→π0νν¯

Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields (1997)

Arjun Berera Thomas W. Kephart Marc Sher

An attractive alternative to the standard model of $\mathrm{CP}$ violation is the aspon model. In this model, $\mathrm{CP}$ is spontaneously broken, automatically solving the strong $\mathrm{CP}$ problem. Recently, it has been shown that $\mathrm{CP}$ violation in the $B$ system is much smaller in the aspon model than in the standard model. Here we provide a complementary study by considering ${K}_{L}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}\ensuremath{\nu}\overline{\ensuremath{\nu}}$, which is almost entirely $\mathrm{CP}$ violating and free of hadronic uncertainties, and show that the rate in the aspon model is many orders of magnitude below the standard model rate. Observation of ${K}_{L}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}\ensuremath{\nu}\overline{\ensuremath{\nu}}$ would rule out the aspon model.

10.1103/physrevd.56.7456

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Contactless method of determining the coefficient of thermal diffusivity of local domains of surface layers and thin films

Journal of Engineering Physics (1976)

Konstantin Gartsman T. T. Dedegkaev A. D. Terekhov Marc Sher

Mass diffusivity

10.1007/bf00861793

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1 Higgs working group report

S. Dawson A. V. Gritsan Heather E. Logan C. Tully R. Van Kooten

This report summarizes the work of the Energy Frontier Higgs Boson working group of the 2013 Community Summer Study (Snowmass). We identify the key elements of a precision Higgs physics program and document the physics potential of future experimental facilities as elucidated during the Snowmass study. We study Higgs couplings to gauge boson and fermion pairs, double Higgs production for the Higgs self-coupling, its quantum numbers andCP -mixing in Higgs couplings, the Higgs mass and total width, and prospects for direct searches for additional Higgs bosons in extensions of the Standard Model. Our report includes projections of measurement capabilities from detailed studies of the Compact Linear Collider (CLIC), a Gamma-Gamma Collider, the International Linear Collider (ILC), the Large Hadron Collider High-Luminosity Upgrade (HLLHC), Very Large Hadron Colliders up to 100 TeV (VLHC), a Muon Collider, and a Triple-Large Electron Positron Collider (TLEP).

International Linear Collider

Muon collider

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Higgs Working Group Report of the Snowmass 2013 Community Planning Study

arXiv (Cornell University) (2013)

S. Dawson A. V. Gritsan Heather E. Logan J. Qian C. Tully

This report summarizes the work of the Energy Frontier Higgs Boson working group of the 2013 Community Summer Study (Snowmass). We identify the key elements of a precision Higgs physics program and document the physics potential of future experimental facilities as elucidated during the Snowmass study. We study Higgs couplings to gauge boson and fermion pairs, double Higgs production for the Higgs self-coupling, its quantum numbers and $CP$-mixing in Higgs couplings, the Higgs mass and total width, and prospects for direct searches for additional Higgs bosons in extensions of the Standard Model. Our report includes projections of measurement capabilities from detailed studies of the Compact Linear Collider (CLIC), a Gamma-Gamma Collider, the International Linear Collider (ILC), the Large Hadron Collider High-Luminosity Upgrade (HL-LHC), Very Large Hadron Colliders up to 100 TeV (VLHC), a Muon Collider, and a Triple-Large Electron Positron Collider (TLEP).

10.48550/arxiv.1310.8361

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Citations (175)

Fourth generationb′decays intob+Higgs boson

Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields (2000)

Marc Sher

If a fourth generation quark exists whose mass is below 255 GeV, then the only two-body charged current decay, b'-->cW, is doubly-Cabibbo suppressed. For this reason, CDF has searched for the one-loop neutral current decay b' --> bZ, assuming that the branching ratio into bZ is 100%; an analysis giving the bounds on m_b' for smaller branching ratios is in preparation. In this Report, we examine the neutral current decay b' --> bH, which will occur if the Higgs mass is less than m_b'-m_b. Four different cases are examined: the sequential case, the non-chiral isosinglet case, the non-chiral isodoublet case, and a two-Higgs model with flavor-changing neutral currents. In the first three of these, the rates for b' --> bZ and b' --> bH are comparable, assuming comparable phase space factors; in the fourth, b' --> bH is completely dominant. Thus, we emphasize the importance of giving b' mass bounds as a function of the branching ratio into bZ, since the assumption of a 100% branching ratio for b' --> bZ may only be valid if the Higgs mass is near or above the b' mass.

10.1103/physrevd.61.057303

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Citations (15)

An inflationary model without fine-tuning or supersymmetry

Physics Letters B (1983)

Marc Sher

Yukawa potential

10.1016/0370-2693(83)91465-x

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Citations (3)

Supersymmetric model with Dirac neutrino masses

Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology (2010)

Gardner Marshall Mathew McCaskey Marc Sher

New models have recently been proposed in which a second Higgs doublet couples only to the lepton doublets and right-handed neutrinos, yielding Dirac neutrino masses. The vacuum value of this second ``nu-Higgs'' doublet is made very small by means of a very softly-broken ${Z}_{2}$ or $U(1)$ symmetry. The latter is technically natural and avoids fine-tuning and very light scalars. We consider a supersymmetric version of this model, in which two additional doublets are added to the minimal supersymmetric standard model (MSSM). If kinematically allowed, the decay of the heavy MSSM scalar into charged nu-Higgs scalars will yield dilepton events which can be separated from the W-pair background. In addition, the nu-Higgsinos can lead to very dramatic tetralepton, pentalepton, and hexalepton events which have negligible background and can be detected at the LHC and the Tevatron.

Vacuum expectation value

10.1103/physrevd.81.053006

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Citations (14)

Implications of a Higgs discovery at LEP

Physics Letters B (1996)

P. Q. Hung Marc Sher

10.1016/0370-2693(96)00123-2

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Citations (16)

The Internet for Scientists and Engineers: Online Tools and Resources

Physics Today (1995)

Brian J. Thomas Marc Sher

PART I: INTERNET ACCESS, TOOLS, AND NAVIGATION 1. Introduction 2. Getting online 3. Your first logon 4. Electronic mail 5. Electronic mail servers 6. Discussion lists 7. Files and formats 8. Telnet 9. FTP 10. Usenet groups 11. Tools for searching 12. Online databases 13. World wide web PART II: SCIENCE RESOURCES ON THE INTERNET Aeronautics and Aerospace, Agriculture, Anthropology, Archaeology, Artificial Intelligence, Astronomy, Biology, Chemistry, Computer Science, Electronics and Electrical Engineering, Engineering, Geology, Imaging Technology, Linguistics, Mathematics, Medicine, Meteorology, Oceanography, Optics, Physics, Security, Statistics, Virtual Reality APPENDIXES A: Personal computer basics B: Internet service providers Glossary Index

10.1063/1.2808210

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Discovering charged Higgs bosons in theWplus dark vector boson decay mode

Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology (2014)

Hooman Davoudiasl William J. Marciano Raymundo Ramos Marc Sher

In two-Higgs doublet extensions of the Standard Model, flavor-changing neutral current constraints can be addressed by introducing a $U(1{)}^{\ensuremath{'}}$ gauge symmetry, under which the Higgs doublets carry different charges. That scenario implies the presence of a ${H}^{\ifmmode\pm\else\textpm\fi{}}{W}^{\ensuremath{\mp}}{Z}^{\ensuremath{'}}$ vertex at tree level. For the light ``dark'' $Z$ model (${Z}^{\ensuremath{'}}={Z}_{d}$) with ${m}_{{Z}_{d}}<10\text{ }\text{ }\mathrm{GeV}$, such a coupling leads to the dominant decay mode ${H}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{W}^{\ifmmode\pm\else\textpm\fi{}}+{Z}_{d}$ (for ${m}_{{H}^{\ifmmode\pm\else\textpm\fi{}}}\ensuremath{\lesssim}175\text{ }\text{ }\mathrm{GeV}$), rather than the usual type I model decay ${H}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{\ensuremath{\tau}}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\nu}$, for a broad range of parameters. We find that current analyses do not place significant bounds on this scenario. Over much of the parameter space considered, the decay of a pair-produced $t$ ($\overline{t}$) into ${H}^{+}b$ (${H}^{\ensuremath{-}}\overline{b}$) provides the dominant ${H}^{\ifmmode\pm\else\textpm\fi{}}$ production. Analysis of available LHC data can likely cover significant ranges of our parameters, if ${Z}_{d}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ has a branching ratio of $\ensuremath{\sim}20%$. If the ${Z}_{d}$ decays mainly invisibly then probing the entire relevant parameter space would likely require additional data from future LHC runs. We briefly discuss the phenomenology for ${m}_{{H}^{\ifmmode\pm\else\textpm\fi{}}}\ensuremath{\gtrsim}175\text{ }\text{ }\mathrm{GeV}$.

Branching fraction

10.1103/physrevd.89.115008

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Citations (15)